66193

Appears in sequences

• Structured hexagonal diamond numbers (vertex structure 5).at n=36A100178
• a(n) = 4 + floor(Sum_{k=1..n-1} a(k) / 2).at n=24A120134
• a(n) = 625*n^2 - 886*n + 314.at n=10A157618
• Greedy Coppersmith-Winograd sequence.at n=28A172161
• 1/9 the number of (n+1) X 7 0..2 arrays with all 2 X 2 subblocks having the same four values.at n=14A184045
• Number of nX1 0..1 arrays with all rows and columns having a nonnegative second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=16A223220
• Number of partitions of n such that some part is a sum of two other parts.at n=44A237113
• Numbers k such that the equation x^2 - k*y^4 = -1 has a solution for which |y| > 2.at n=30A356488